Fuel saving device for internal combustion engines



L. .1. BRICE 2,080,302

FUEL SAVING DEVICE lFOR NTERNAL COMBUSTION ENGINES May 11, 1937.

Fiied Nov. 2o, 195e f90/fard ,J 57166,

ATTCRNEYS Patented May 11, 1937 UNITED STATES PATENT OFFICE FUEL SAVING DEVICE FOR INTERNAL A COMBUSTION ENGINES i 3 Claims.

This invention relates to a fuel saving device for internal combustion engines, and has for the primary object the provision of a device of this character which will provide more efficient acceleration, smoother operation and longer life to the engine and permit more power to be developed by said engine when operating under heavy loads.

With these and other objects in view, this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention,

' reference is to be had to the following description and accompanying drawing, in which The figure is a side elevation, partly in section, illustrating a fuel saving device constructed in accordance with my invention.

Referring in detail to the drawing, the numeral I indicates an intake manifold of an engine and 2 an exhaust manifold. The intake manifold has a carbureter 3 connected thereto and 3 indicates the carbureter control valve. A fuel supply pipe 4 is connected to the carbureter. The parts described are common in the construction of an internal combustion engine and these parts have my invention connected thereto.

A pipe 5 is connected tothe intake manifold adjacent the carbureter 3 and has branch pipes 8 and 1. The branch pipe 6 is equipped with a control valve 8 preferably of the needle type and to which a tube 9 is connected. The tube 9 is secured to and extends through a cover I of a container II. The cover I0 is also provided with avent means I2. A suitable lubricant is placed in the container II and by the suction developed in the intake manifold by the engine lubricant will be drawn from the container and delivered into the firing chambers of the engine by way of the intake manifold. The amounts in which the lubricant may pass to the engine may be varied by adjusting the valve 8. This lubricant entering the engine or the ring chambers thereof will efficiently lubricate the pistons of the engine as well as the valves.

A mixing chamber I3 is connected at one end to the branch pipe 'l and its opposite end has connected thereto a control valve I4 which is manipulated manually by a control I 5. The valve I4 is connected to the exhaust manifold 2 by a pipe I6. By adjusting the valve I4 the amount of exhaust entering the mixing chamber I3 can be varied. A control valve I1 is arranged in the mixing chamber I3 for regulating the iiow of air and gases from the mixing chamber to the pipe and is operatively connected to an accelerator I8 of the carbureter 3. A spring I9 is connected to the valve I1 for'urging the latter into a closed position. A sleeve l2li is connected to the mixing chamber I3 and rises therefrom and forms a part of an air cleaner 2l consisting of a casing 22 perforated, as shown at 23, and has located therein a ltering material 24. The sleeve 20 extends upwardly in the casing 2I to a desired height above the ltering material so that air entering the casing before reaching the sleeve must pass through the filtering material.

From the foregoing description it will be seen that exhaust gases and air may enter the mixing chamber I3 and pass into the engine by Way of the pipe 5 and intake manifold and to be regulated by the throttle of the carbureter connected to the intake manifold.

A valve 25 of the needle type is connected to the casing 22 of the air filter and extends a limited distance into the sleeve 20 and has connected thereto a control valve 26. A pipe 21 connects the control valve 26 to the fuel supply pipe 4 and has a cutoff valve 28 therein. The control Valve 26 is connected to the valve I'l by links and levers 29 so that when the valve I1 is moved towards an open position by the throttle I8 the valve 2E also will be opened to admit fuel to the sleeve 20 which fuel may pass with the air into the mixing chamber I3 and there become mixed With the exhaust gases which raises the temperature of the air and fuel prior to reaching the intake manifold of the engine. At any time the fuel to the air iilter may be discontinued by closing the valve 28 and also the amount of fuel entering the air lter may be varied by adjusting the valve 25.

When the accelerator or throttle control I8 is moved to increase the speed of the engine it simultaneously moves the valves Il and 26 towards open position. The connection between the valve Il and the throttle control I8 is of an adjustable character so that if desired the throttle control I8 may have a certain amount of movement to open the carbureter before opening the valves I'I and '26. As the throttle control I8 is advanced to open the c-arbureter 3 an additional fuel mixture preheated will be introduced into the intake manifold in addition to the fuel received from the carbureter which Will provide quicker acceleration to the engine, smoother operation and more power. Also lubricant may be admitted to the engine along with theladditional supply of fuel from the container Having described the invention, I claim:

1. A fuel saver for engines comprising a mixing chamber, means for connecting said chamber to an intake manifold of an engine, means for connecting the mixing chamber to an exhaust manifold of the engine, a valve for controlling the escape of gases from the mixing chamber to said first means and actuated by a throttle of a carbureter of the engine, an air cleaner connected to the mixing chamber and including a sleeve, means for admitting fuel to said sleeve, said sleeve receiving filtered air from the filter, and a valve for controlling the fuel to the sleeve and actuated by the first-named valve.

2. A fuel saver for engines comprising a mixing chamber, means for connecting said chamber to an intake manifold of an engine, means for connecting the mixing chamber to an exhaust manifold of the engine, a valve for controlling the escape of gases from the mixing chamber to said first means and actuated by a throttle of a carbureter of the engine, an air filter connected to the mixing chamber and including a sleeve, means for admitting fuel to said sleeve, said sleeve receiving filtered air from the lter, a valve for controlling the fuel to the sleeve and actuated by the first-named valve, and a control valve for regulating the exhaust gases to the mixing chamber.

3. A fuel saver for engines comprising a mixing chamber, means for connecting said chamber to an intake manifold of an engine, means for connecting the mixing chamber to an exhaust manifold of the engine, a valve for controlling the escape of gases from the mixing chamber to said rst means and actuated by a throttle of a carbureter of the engine, an air filter connected to the mixing chamber and including a sleeve, means for admitting fuel to said sleeve, said sleeve receiving filtered air from the filter, a valve for controlling the fuel to the sleeve and actuated by the first-named valve, a control valve for regulating the exhaust gases to the mixing chamber, and means for supplying and regulating lubricant to the intake manifold by way of said first means.

- LEONARD J. BRICE. 

